problems with file and printer sharing between xp and 200

ok heres the deal, im having problems setting up file and printer sharing between 2 computers. i can see the computers in my workgroup, but when i try to access the computer it says i dont not have the right permissions. here is my set up

windows xp (home or pro)
windows 2000 pro
both computers are in the same work group
both computer have file and printer sharing set up
both have admin rights (even tried creating other user with admin rights)

hmmm, i think that if you're not in a Domain environment, that when connecting to your other computer, it automatically uses the guest account. You can do a couple of things.

1.) Enable the guest account on both computers (probably a good idea to assign it a password)

2.) If you are using user authentication on the computer you are signed in as (ie. you enter a password when windows boots up) then, you need to give that user exclusive access to the share you are trying to access.